Will mark is investigating natural resources. he has created a chart. hector can add all but one of these terms under the heading “natural resource.” that is

a) gas

b) trees

c) copper

d) electricity

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Describe two recent or ongoing space missions.

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.